Run: 2026-05-01-01KQHQKAKC8F1G6P298A9A1AXK

Run Details

Duration:
16.6s
Cost:
$0.001493
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
Fail Matches text (details)
Pass Matches Regex (details)
no eval Overall

Model input

User/Human
Who does "he" refer to in the last sentence? Only return the name. Tom and Jerry were playing in the yard. Spike, the dog, was watching them from his kennel. Suddenly, he started barking loudly.

Model response

AI
Spike The last sentence's "he" is a pronoun that refers back to the most recently mentioned male entity capable of the described action (barking). The preceding sentence introduces "Spike, the dog" as the subject performing an action (watching), and barking is a behavior stereotypically associated with dogs, not with the cat or mouse characters (Tom and Jerry) established in sentence 1. This creates a clear anaphoric link with zero textual cues pointing elsewhere.
created_at"2026-05-01T12:18:14.77Z" 5/1/2026, 12:18:14 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency15172
moderation_latency(null)
generation_time16505
tokens_prompt51
tokens_completion210
native_tokens_prompt170
native_tokens_completion539
native_tokens_completion_images(null)
native_tokens_reasoning445
native_tokens_cached64
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0014928
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"bd7ef14f-068e-927d-b158-fdd5ca433389"
is_byokfalse
latency52
model_permaslug"x-ai/grok-4.20-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777637894-XOE2Imv0rZwlDrnLV0eA"
session_id(null)
api_type"completions"
id"gen-1777637894-iMcmu5jmEyvQenYfdl51"
upstream_id"bd7ef14f-068e-927d-b158-fdd5ca433389"
total_cost0.0014928
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
Fail Matches text
Case sensitive: Spike
n/a
Pass Matches Regex
/\bSpike\b/
n/a
no eval